Toshiba A20-S259 - Satellite - Pentium 4 2.66 GHz Maintenance Manual page 213

4.1 General
Before You Begin
Look over the procedures in this section before you begin disassembling the computer. Familiarize
yourself with the disassembly and reassembly steps. Begin each procedure by removing the AC
adapter and the battery pack as instructed in this section:
1. Do not disassemble the computer unless it is operating abnormally.
2. Use only the correct and approved tools.
3. Make sure the working environment is free from the following elements whether you are
using or storing the computer.
Dust and contaminates
Static electricity
Extreme heat, cold and humidity
4. Make sure the FRU you are replacing is causing the abnormal operation by performing the
necessary diagnostics tests described in this manual.
5. Do not perform any operations that are not necessary and use only the described
procedures for disassembling and installing FRUs in the computer.
6. After removing parts from the computer, place them in a safe place away from the computer
so they will not be damaged and will not interfere with your work.
7. You will remove and replace many screws when you disassemble the computer. When you
remove screws, make sure they are placed in a safe place and identified with the correct
parts.
8. When assembling the computer make sure you use the correct screws to secure the various
pieces in place. Screw sizes are listed in their corresponding figures.
9. The computer contains many sharp edges and corners, so be careful not to injure yourself.
10. After you have replaced an FRU, make sure the computer is functioning properly by
performing the appropriate test on the FRU you have fixed or replaced.
Satellite A20 Maintenance Manual (960-444)
4 Replacement Procedures
4-3